[dpdk-dev] seg fault in InterVM communication using virtio

[Yuanhan Liu]

On Wed, Feb 22, 2017 at 02:25:29PM +0530, mitali wrote:
> Hi Yuanhan,
> 
> We are using virt-manager to start the VMs. We are attaching the image which
> shows the vNIC setup for the VMs.
> 
> We have written our own dpdk application to send and receive UDP packets. The
> command we are using is
> 
> ./build/app/dpdkapi -c 1 -- -p 1 where dpdkapi is our application.
> 
> Inside the application we are sending and receiving packets from vNIC using
> rte_eth_tx_burst() and rte_eth_rx_burst().
> 
> At the sender side after 127 packets the application stops and we observe a seg
> fault in dmesg. Using the print statements we observed that it faults in
> rte_eth_tx_burst(). All the 127 were received at the receiving VM.

Would you recompile dpdk with debug info enaled, which could be done by:

	make ... EXTRA_CFLAGS='-g3 -O0'

And run it with gdb then dump the call stack?

	--yliu